XRISM

X-ray Imaging and Spectroscopy Mission
Also called XARM

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General

Designation	57800 / 23137A
Launch date	6 Sep 2023
Country of origin	Japan
Mission	Scientific: X-ray astronomy
Perigee/Apogee	580 km (sun-synchronous)
Inclination	31°
Period	96.1 min
Launch vehicle	H2A #65

Built by JAXA to replace Astro H and observe hot gas plasma within galaxy clusters.

Carries 2 instruments:
Resolve: an X-ray spectrometer with two 0.45m telescopes. It's aperture door protesting the detector, causing lower energy protons to be blocked
Xtend: an X-ray imager

Has 2 identical mirrors.

n2yo.com tracking

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